The invention relates to an automobile steering system, in particular to a driver road-sensing simulation device of an automobile linear control steering system, comprising a steering disc, a harmonic reducer, a synchronous motor, and an electronic control unit (ECU); a rotating shaft of the steering disc is provided with a torque sensor and an angular displacement sensor which can transmit the signals to the ECU; meanwhile, the torque of the steering disc is transmitted to the synchronous motor by the harmonic reducer; the coil current information of the synchronous motor is transmitted to the ECU by a Hall current sensor. After receiving the information, he ECU combines the speed signals and load torque signals received by another two ports, controls the rotation of the synchronous motor by phase compensation, damping compensation, inertia compensation, friction compensation, etc., gains a feedback torque and transmits the feedback torque to the steering disc by the reducer.